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Logic

Logic

Logic forum

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Texas Instruments (TI) Logic support forum is an extensive online knowledge base where millions of technical questions and solutions are available 24/7. You can search logic IC content or ask technical support questions on everything from voltage level translation and transceivers to standard logic gates and specialty logic devices. Find the right solution for your circuit design challenges by using our TI E2E™ support forums that are supported by thousands of contributing TI experts.
Frequent questions
  • [FAQ] Can the input voltage (Vi) to my logic device be higher than the supply voltage (Vcc)?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Input Parameters >> Current FAQ This question is really about the input structure of a logic device. There are primarily two types of CMOS input structures - one with a positive clamping diode, and one without…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Where do I connect the thermal pad of the logic QFN devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Power and Thermals >> Current FAQ Some datasheets do not specify what should be done with the thermal pad, such as in the image below: The thermal pad is recommended to be soldered to the PCB and electrically…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum capacitive load that a logic device can drive?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC2G34 FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ There are a few issues with trying to determine a maximum capacitive load for a standard CMOS logic device. First is propagation delay…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Why does a logic device's part number have an E4/G4 suffix?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ In short, there will be no difference between a device labelled SN74xxG4 and SN74xx. Historically, G4 and E4 suffixes meant that the devices were rated to be "Green" or…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the difference between TXS TXB and LSF devices?

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Is part number X pin to pin compatible with part number Y?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ It's extremely common to need to know if one device can be directly replaced with another. With Standard Logic devices, this is generally an easy process. The part number…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the output transition rate for a logic device?

    Emrys Maier
    Emrys Maier
    Other Parts Discussed in Thread: SN74LVC1G08 FAQ: Logic and Voltage Translation > Output Parameters >> Current FAQ Very few logic devices specify an output transition rate, and those that do only specify it under very specific conditions. The best…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] Why do the leadframes look strongly oxidized or corroded?

    Karan Kotadia
    Karan Kotadia
    FAQ: Logic and Voltage Translation > Quality and Manufacturing >> Current FAQ Texas instruments has decided to change from non-roughened leadframe to single-side roughened leadframe for some of its parts. For this reason these devices look as if they…
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the TXS device internal resistor variation/ tolerance

    ShreyasRao
    ShreyasRao
    FAQ: Logic and Voltage Translation > Voltage Translators >> Current FAQ According to the design simulation, the variation of the 10K internal resistor of the TXS device can be between 6.5k to 15kohm across PVT.
    • over 7 years ago
    • Logic
    • Logic forum
  • [FAQ] What is the maximum junction temperature (TJMAX) for a device?

    Emrys Maier
    Emrys Maier
    FAQ: Logic and Voltage Translation > Power and Thermals >> Current FAQ The vast majority of logic devices do not list a maximum junction temperature ( T J(max) ) on the datasheet. For logic devices, T J(max) is equal to the maximum storage temperature…
    • Answered
    • over 7 years ago
    • Logic
    • Logic forum
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  • Not Answered

    TPLD801: Apllication Inquiry 0 Locked

    92 views
    0 replies
    Started 5 months ago
    by Liang Tsai
  • Not Answered

    SN74LVC1G74: Output not toggling correctly 0 Locked

    105 views
    1 reply
    Latest 5 months ago
    by Clemens Ladisch
  • Suggested Answer

    TXS0108E-Q1: SDIO Level Shifting Clock drooping during Operation 0 Locked

    485 views
    14 replies
    Latest 5 months ago
    by Jack Guan
  • Answered

    SN74AVC2T245: Excess ICC and ICCZ. 0 Locked

    173 views
    2 replies
    Latest 5 months ago
    by IDK
  • Answered

    SN74AHC1G32: About input resistance 0 Locked

    138 views
    1 reply
    Latest 5 months ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LVC1G125: Max 5.5V input on /OE pin with VCC 3.3V 0 Locked

    124 views
    1 reply
    Latest 5 months ago
    by Clemens Ladisch
  • Not Answered

    SN74LVCR162245: Need thermal resistance values (Rjc, Rjb, etc.) and Tjmax 0 Locked

    100 views
    1 reply
    Latest 5 months ago
    by Ian Graham
  • Suggested Answer

    LSF0204: Urgent recommendation needed for a Pin compatible part with no external Pullups 0 Locked

    264 views
    3 replies
    Latest 5 months ago
    by Jack Guan
  • Answered

    TXS0102: maximum bus capacitance and OE pull-down value 0 Locked

    178 views
    3 replies
    Latest 5 months ago
    by Clemens Ladisch
  • Suggested Answer

    SN74LS32: Request for a study of the impact of Trump tariffs 0 Locked

    419 views
    1 reply
    Latest 5 months ago
    by Ian Graham
  • Suggested Answer

    SN74LVTH182512: Pspice Model 0 Locked

    154 views
    3 replies
    Latest 5 months ago
    by Malcolm Lyn
  • Suggested Answer

    SN74LVTH125: OPA727AIDGKR; SN74LVTH125PWR; LM2903DR; CDCLVC1103PWR; CDCLVC1106PWR; SN75C3232DWR; TPS77515DG4; AMC1311BDWV 0 Locked

    302 views
    5 replies
    Latest 5 months ago
    by Malcolm Lyn
  • Not Answered

    SN74LVC1G97-Q1: Need thermal resistance values (Rjc, Rjb, etc.) and Tjmax 0 Locked

    91 views
    2 replies
    Latest 5 months ago
    by Scott Bouras
  • Suggested Answer

    SN74LVC1G14: MTBF and Pi factors request 0 Locked

    122 views
    1 reply
    Latest 5 months ago
    by Ian Graham
  • Suggested Answer

    SN74LVC1G32: MTBF and Pi factors request 0 Locked

    110 views
    1 reply
    Latest 5 months ago
    by Ian Graham
  • Suggested Answer

    SN74LVCH244A: MTBF and Pi factors request 0 Locked

    108 views
    1 reply
    Latest 5 months ago
    by Ian Graham
  • Suggested Answer

    SN74LVC1T45: Glitch during power up and power down if driving high, output voltage droops to ~1.25V tracking VCC when entering or exiting tristate +1 Locked

    182 views
    3 replies
    Latest 5 months ago
    by Joshua Salinas
  • Answered

    SN74HCS541: What's the max bandwidth value for both SN74HCS541/SN74AHC244 ? 0 Locked

    110 views
    1 reply
    Latest 5 months ago
    by Clemens Ladisch
  • Answered

    CD40106B: Behavior of the trigger 0 Locked

    254 views
    5 replies
    Latest 5 months ago
    by Sebastian Meneses
  • Answered

    SN74AHC1G14: Confirmation Regarding Input Voltage Behavior at VCC = 0V for SN74AHC1G14 and SN74LVC1G14 0 Locked

    133 views
    1 reply
    Latest 5 months ago
    by Clemens Ladisch
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